21. Chris Caldwell, Selected Publications C. Caldwell and H. Dubner, Primes in pi, J. recreational math., to appear. C. Caldwell, New largest known prime, J. recreational math., 281 (199697) 17. http://www.utm.edu/~caldwell/papers.html

Chris Caldwell Selected Publications Home Page Current Projects Prime Curios! Prime Links Prime Glossary Prime References Prime Numbers The Prime Pages Largest Known Submit Primes Finding Primes ... Prime Lists Other Graph Theory Primal Sounds Personal Pages Publications Office Hours FBC Martin Baptist Faith... School Pages Banner Library Search UTM Misc Google MathSciNet C. Caldwell and Y. Gallot , "On the primality of n! and p Math. Comp. MR 2002g:11011 Abstract available Annotation available C. Caldwell and G. L. Honaker, Jr. , "Is unique?," Math. Spectrum :2 (2000/2001) 3436. Preprint available online at http://www.utm.edu/~caldwell/preprints/ C. Caldwell and H. Dubner , "Primes in pi," J. Recreational Math. , to appear. G. L. Honaker, Jr. and C. Caldwell , "Palindromic prime pyramids," J. Recreational Math. Annotation available C. Caldwell and H. Dubner , "Unique period primes," J. Recreational Math. C. Caldwell , "Unique (period) primes and the factorization of cyclotomic polynomial minus one," Mathematica Japonica MR 99b:11139 Abstract available C. Caldwell

22. Prime Page References Caldwell87 C. Caldwell, Truncatable primes, J. recreational math., 191(1987) 3033. 331, J. recreational math., 214 (1989) 299-304. http://www.utm.edu/research/primes/references/refs.cgi?author=Caldwell

23. Recreational Math Workshop The workshop is intended for teachers of Grades 112. Participants will work in smallgroups to prepare recreational math Units suitable to their grade level. http://www.millersv.edu/~kkittapp/workshop.html

Recreational Mathematics Workshop In the Summer, I offer a hands-on workshop on Recreational Mathematics for the Classroom (EDW 526). The workshop is intended for teachers of Grades 1-12. Participants will work in small groups to prepare Recreational Math Units suitable to their grade level. They would then present the units to the class of workshop participants. Participants will be given necessary guidance to prepare the Units. Each participant will also make one individual presentation on a recreational math topic of his/her choice. Topics are drawn from arithmetic, geometry, statistics, etc. They include mathematical magic tricks (with numbers, geometrical figures, ropes, etc), construction of geometrical figures, mathematical games and so on. Kit Kittappa's Page Math Department Page Millersville University Page

24. Recreational Mathematics Topics By Steven Dutch. Symmetry, Crystals, Polyhedra and Tilings; Pythagorean triplets and other things Category Science Math Recreations......recreational mathematics Topics. Steven Dutch, Natural and Applied Sciences,University of Wisconsin Green Bay. Index Symmetry, Crystals http://www.uwgb.edu/dutchs/RECMATH/recmath.htm

Recreational Mathematics Topics Steven Dutch, Natural and Applied Sciences, University of Wisconsin - Green Bay Index: Symmetry, Crystals, Polyhedra and Tilings Power Page. Pythagorean triplets and other things about sums of powers. Gonzo Primes. Huge primes and factors of huge numbers. Number Oddities Geometry Classics Return to Professor Dutch's home page. Created 30 Dec 1996, Last Update 23 Sept 1997 Not an Official UW-Green Bay Site

25. Steve Dutch Home Page 296492 Geologic Field Methods Syllabus and Notes, Otherrecreational math items, Sketches of Comet Hale-Bopp. http://www.uwgb.edu/dutchs/

Steve Dutch Natural and Applied Sciences, University of Wisconsin-Green Bay Office: LS 116 phone: 465-2246 e-mail: dutchs@gbms01.uwgb.edu This Home Page: http://www.uwgb.edu/dutchs Active links are indicated. Other items are projected or under development: Outside Searchers - Please Read This First A note of caution about using this site. Contents Note: The column headers are internal links to places further down the page where more specific information is provided. My schedule is also an internal link. All other links are to other pages. General Information Course Information Topics of research or personal scholarly interest Other Topics of Personal Interest Fall 1998 Schedule 296-202 Physical Geology Syllabus Notes Geology of Wisconsin Gulf War - Kurdistan, 1991 ... University Survival Guide 362-142 Exploration of the Universe Syllabus Notes Wisconsin Geologic Locality Descriptions Bosnia, 1996 ... Personal biographical information (Sorry, nothing incriminating!) 362-190 Emergence of Western Technology Syllabus Notes Unusual Wisconsin Weather Events The 432d Civil Affairs Battalion in Pictures ... Got a Problem or Complaint? 296-492 Special Topics in Earth Science: Crustal Materials (Mineralogy - Petrology) Syllabus Notes Virtual Field Trips Britain-Ireland Photos 1998 296-492 Crustal Movements Syllabus and Notes Geologic Maps of the States Cornerstone 98 Photos - Bulgaria Structural Geology Methods Manual ... Crystallography, symmetry, tilings and polyhedra

26. ASPN : Python-Tutor : Tim Peters - RE: [Tutor] A Recreational Math Problem For U RE Tutor A recreational math problem for Useless Python add thisthread to my home page. by Tim Peters other posts by this author http://aspn.activestate.com/ASPN/Mail/Message/python-Tutor/728064

sign in join Home Perl ... About ASPN python-Tutor recent archives about leaders ... add list to my home page search in python-Tutor all lists Perl lists Python lists PHP lists Tcl lists XSLT lists .NET lists Web Services lists Reference Products Recipes News Modules Mailing Lists The Perl Journal all ASPN advanced search help RE: [Tutor] A recreational math problem for Useless Python add this thread to my home page by Tim Peters other posts by this author Aug 13 2001 7:27AM messages near this date Re: [Tutor] A recreational math problem for ... RE: [Tutor] A recreational math problem for ... [Danny Yoo] > I've been glancing at Donald Knuth's neat "Selected Papers on Computer > Science" and ran across an interesting problem that he presents. It It's an excellent problem, although I wish he would have left square roots out of it (floating-point arithmetic complicates the problem to no good end). There's a large and difficult literature on the "subset sum" problem, of which this is an instance. That doesn't mean people should be scared away, it means an exact solution is *so* hard ("NP-hard" in the jargon) that *nobody* knows how to do it efficiently. So any stupid-ass <wink> trick you can dream up is fair game. A "stupid-ass trick" is known as a "heuristic" in the jargon, BTW, and finding good heuristics is a fascinating game. After playing with this for a few years <wink>, you might want to check out Bartosz Przydatek's 1998 subset-sum heuristic, available in a paper here:

27. ASPN : Python-Tutor : Rob Andrews - Re: [Tutor] A Recreational Math Problem For Re Tutor A recreational math problem for Useless Python add thisthread to my home page. by Rob Andrews other posts by this author http://aspn.activestate.com/ASPN/Mail/Message/python-Tutor/731253

sign in join Home Perl ... About ASPN python-Tutor recent archives about leaders ... add list to my home page search in python-Tutor all lists Perl lists Python lists PHP lists Tcl lists XSLT lists .NET lists Web Services lists Reference Products Recipes News Modules Mailing Lists The Perl Journal all ASPN advanced search help Re: [Tutor] A recreational math problem for Useless Python add this thread to my home page by Rob Andrews other posts by this author Aug 15 2001 9:25PM messages near this date RE: [Tutor] A recreational math problem for ... RE: [Tutor] A recreational math problem for ... Daniel Coughlin wrote: It took me long enough, but your solution has been posted to Useless Python. If you truly enjoy this sort of problem, take a look at some of the (hundreds of) ACM problems available: http://www.lowerstandard.com/python/acmcontest.html http://www.lowerstandard.com/python Tutor@NO-SPAM.python.org http://mail.python.org/mailman/listinfo/tutor Thread : add this thread to my home page Danny Yoo Rob Andrews Tim Peters ... ActiveState SRL

28. Recreational Math Links recreational mathematics (aka Fun Stuff) Just for Fun, MegaMath. Geometry Jokes, Puzzles. Cool Math, ReturnTo Links. http://www.apsu.edu/Galois/Links/mathlinks_rec.htm

Recreational Mathematics (a.k.a. Fun Stuff) Just for Fun Mega Math Geometry Jokes Puzzles ... Cool Math Return To Links

29. Basic Library List-Recreational Mathematics Book list split into categories. Includes title, author, publisher and date information about each book.Category Science Math Recreations...... Stewart, Ian. Game, Set, and Math Enigmas and Conundrums Cambridge, MA Basil Blackwell,1989. recreational mathematics Puzzle Collections. Ainley, Stephen. http://www.maa.org/BLL/recmath.htm

Recreational Mathematics Back to Table of Contents Recreational Mathematics: Surveys * Averbach, Bonnie and Chein, Orin. Mathematics: Problem Solving through Recreational Mathematics New York, NY: W.H. Freeman, 1980. *** Ball, W.W. Rouse and Coxeter, H.S.M. Mathematical Recreations and Essays, Mineola, NY: Dover, 1987. Thirteenth Edition. * Beiler, Albert. Recreations in the Theory of Numbers Mineola, NY: Dover, 1964. *** Berlekamp, Elwyn R.; Conway, John Horton; and Guy, Richard K. Winning Ways for Your Mathematical Plays, New York, NY: Academic Press, 1982. 2 Vols. Cadwell, J.H. Topics in Recreational Mathematics New York, NY: Cambridge University Press, 1966. Foster, James E. Mathematics as Diversion Astoria, IL: Fulton County Press, 1978. *** Kraitchik, Maurice. Mathematical Recreations, Mineola, NY: Dover, 1953. Second Edition. * Melzak, Z.A. Companion to Concrete Mathematics, New York, NY: John Wiley, 1973, 1976. 2 Vols. ** Ogilvy, C. Stanley. Tomorrow's Math: Unsolved Problems for the Amateur, New York, NY: Oxford University Press, 1972. Second Edition.

30. E-z Math Recreational Links ezgeometry recreational math Links. http://www.e-zgeometry.com/links/reclinks.htm

e-zgeometry Recreational Math Links Hot Math Games Math Magic Cool Math Topics Unknown ... Peg Game - Addictive - Try to leave only one peg in the center hole (be patient) Triangle Peg Game - a different version of the classic peg game Donkey Puzzle - Very Challenging - Only one student has done it Boxes - Take turns placing lines down until boxes are formed (most boxes wins) Sokoban - Move the money symbols to the shaded area - Be careful - Stay out of corners BattleShips - NO... You sunk my battleship!! Triple Quintzee - A web version of Yatzee Block Buster - Lots of strategy The Riddler - Try Double Take (memory) or Scrambler (a timed puzzle) Mancala - Ancient Stone Game - Read the rules Abalone - Hexagonal Strategy - Read the rules first Armada - Java Battleships On-line Battleships Game Go To Top Go To Top - Very Suprising Thinks.Com - Great Site Eight Queen Problem - Quite Tricky Rolling Cubes - Quite Tricky 3-D Rubix Like Puzzles - Cool Puzzles Go To Top Largest Know Prime Numbers Where is your birthday in Pi?

31. Research Interests - Recreational Math. The summary for this Japanese page contains characters that cannot be correctly displayed in this language/character set. http://www.lab2.kuis.kyoto-u.ac.jp/~itohiro/r-recreate.html

—£ŽU”Šw‚ÆŒâŠy‚̐”Šw ƒnƒ€ƒTƒ“ƒhƒCƒbƒ`’藝‚̈ê”ʉ» ˆê”ʉ»‚³‚ꂽ‹l‚ߏ«Šû‚ÌŒvŽZ•¡ŽG‚³ ƒWƒƒƒ“ƒPƒ“‚̐”— Ž¿–â‚âÚ×Ž‘—¿‚̐¿‹‚ÍŽ„iˆÉ“¡j itohiro@kuis.kyoto-u.ac.jp ‚Ö‚Ç‚¤‚¼B ƒnƒ€ƒTƒ“ƒhƒCƒbƒ`’藝‚̈ê”ʉ» ITO Hiro, UEHARA Hideyuki, and YOKOYAMA Mitsuo, "2-Dimension Ham Sandwich Theorem for Partitioning into Three Convex Pieces," Proceedings of Japan Conference on Discrete and Computational Geometry (JCDCG '98), LNCS #1763, Springer, 2000, pp. 129157. ->[ v‚É‚ ‚è‚Ü‚·B ™Œ´Œú‹g‚Ù‚©iŠÄCj: wƒAƒ‹ƒSƒŠƒYƒ€HŠwx, ‹¤—§o”Å, 2001”N‚UŒŽ25“úŠ§s ‚Ì4.10ß w‚QŽŸŒ³ƒnƒ€ƒTƒ“ƒhƒCƒbƒ`’藝‚̈ê”ʉ»x ‚ª‚ ‚è‚Ü‚·B ‚Ü‚½Aƒnƒ€ƒTƒ“ƒhƒCƒbƒ`’藝‚ɂ‚¢‚ďڂµ‚­’m‚肽‚¢•û‚́A HŽRm, R.L.Graham, —£ŽU”Šw“ü–åi“ü–å —LŒÀE—£ŽU‚̐”Šw‚Pj, ’©‘q‘“X, 1993. (ISBN 4-254-11419-2) “™‚ðŒä——‰º‚³‚¢B ˆê”ʉ»‚³‚ꂽ‹l‚ߏ«Šû‚ÌŒvŽZ•¡ŽG‚³ ŽQl•¶Œ£ ƒWƒƒƒ“ƒPƒ“‚̐”— ƒg[ƒiƒƒ“ƒg ƒg[ƒiƒƒ“ƒg (tournament)‚Æ‚¢‚¤B ‚ƌĂԂ±‚Æ‚É‚·‚éB ‰äX‚͈ȉº‚̒藝‚𓾂½B ƒWƒƒƒ“ƒPƒ“‚ÌŽè‚̐”‚ðn‚Æ‚·‚éBn‚ª2‚Ü‚½‚Í4‚̃Wƒƒƒ“ƒPƒ“‚É‚Í•K‚¸–³ˆÓ–¡‚Ȏ肪‘¶Ý‚·‚éB‚³‚ç‚Én‚ª2‚Å‚à4‚Å‚à‚È‚¢Ž©‘R”‚È‚ç‚΁A–³ˆÓ–¡‚ÈŽè‚Ì–³‚¢ƒWƒƒƒ“ƒPƒ“‚ª‘¶Ý‚·‚éB ‚Å—^‚¦‚éB ‚±‚ê‚ɑ΂µA‰äX‚́A EGAWA Yoshimi, ENOMOTO Hikoe and ITO Hiro, "Irregularity of incomparable tournaments," manuscript, 1995.

32. Cube Lovers: Recreational Math next prev up Date Tue, 20 Jan 87 144700 0500 (EST) next prev up FromPeter Beck beck@clstr1.decnet ~~~ ~up Subject recreational math http://www.math.rwth-aachen.de/~Martin.Schoenert/Cube-Lovers/Peter_Beck__recreat

Date: Tue, 20 Jan 87 14:47:00 -0500 (EST) From: Peter Beck beck@clstr1.decnet Subject: recreational math BOOKS: Singmaster is editing a series of books for Oxford University Press on Recrreational Mathematics and is requesting input on the following: 1) " I (Singmaster) have embarked on a project to find the sources of classical problems in recreational mathematics. ..... The initial object of this project was to produce a book of sources, translated into english with annotation, for .... However, it now appears that the first stage must be the prpearation of an annotated bibliography of the material. ... draft of paper which outlines the project and some of the material is available. I would be delighted to hear from anyone interested in this project, particularly anyone able to provide info." 2) "I am also compiling a list of mathematical monuments and have a draft article on this." ADDRESS; DAVID SINGMASTER, POLYTECHNIC OF THE SOUTH BANK, LONDON, SE1 OAA, UK

33. Recreational Math Books Recreation Games. http://www.mathcorner.com/books/categories/recreation.htm

34. Recreation Math Resources recreational math, Putnam Archive Undergrad ProblemsInteractive Geometry Rec. Math Page Rec. Math Links Geometry http://www.math.utoledo.edu/margin_recreation.html

Math Resources Recreational Math Putnam Archive Undergrad Problems Interactive Geometry Rec. Math Page ... Math in the Movies

35. Links Margin Math Departments Mathematical Atlas Platonic Realms Calculus Net. Career infoGrant sources Undergraduate opportunities. recreational math. UT Other Sites. http://www.math.utoledo.edu/margin_links.html

Math Resources American Math. Soc. Societies, archives ... arXiv e-Print Archive Electronic Journals ... C.I.R.S. Local Colloquia: BGSU UM WSU Math Departments ... Recreational Math

36. Math Digest The line between recreational math and serious math is a blurry one. Gardnersees recreational math as potentially educational. http://www.ams.org/new-in-math/mathdigest/199811-rec-math.html

Mathematical Digest Short Summaries of Articles about Mathematics in the Popular Press "A Quarter Century of Recreational Mathematics," by Martin Gardner. Scientific American , August 1998. The line between recreational math and serious math is a blurry one. Math is considered recreational if it has a playful aspect that can be understood and appreciated by nonmathematicians. At times, these types of problems generate simple and elegant solutions, but they can also lead to mind-bending paradoxes, bewildering magic tricks, and topological curiousities such as Mobius bands and Klein bottles. It is in this world that Martin Gardner lives. From 1956 to 1981, he wrote Scientific American's column "Mathematical Games." He took no math courses in college, but as a journalist who loves math, he has been able to coax interesting problems out of professional mathematicians. Early on he worked with Solomon Golomb, who studied polyominoes, shapes formed by joining identical squares along their edges (the domino being a simple example). In 1977, MIT's Ronald Rivest allowed Gardner to be the first to reveal the "public-key" cipher system that Rivest invented. At times, seemingly purely recreational problems have turned serious. Magic squares, arrangements of numbers that add up to the same number in every row, column, or diagonal, have always been a popular part of recreational math. Extending this idea, retired railroad clerk Clifford Adams devised a magic hexagon. After receiving it in the mail, Gardner passed it on to mathematician Charles Trigg, who proved that Adams' elegant pattern was the only possible magic hexagon of any size.

37. Mathematics And Recreational Mathematics News rec.org.mensa. Top Math Index recreational math Journals and ProblemColumns from Journals. Math Problem/recreational math Pages 1. http://kam.mff.cuni.cz/~babilon/mirror/vel-math.htm

Non-Yet-Seen WWW sites' book Top Mathematics and Recreational Mathematics Indexes Societies Journals ... NewsGroups/E-Mail For an useful introduction see this Reference Paper Top Indexes Index to MathPro Press Web Page Mathematics Information Servers MathSearch SIAM's Undergraduate Web page ... Eisenhower National Clearinghouse (ENC) Shelton Shool District - Educational Resources (SSD) History of Mathematics: Web Resources Links to other Mathematics pages Math-Net Links to the Mathematical World Mathematics Archives ... Mario Velucchi's Web Links (Mathematics, Chess, Mathematical Recreations, Computer Science ... any more ...) Top Math Index Math Problems and related fields Web HomePages Public Web files for David Eppstein Prof. David SINGMASTER's Web page (by David Singmaster, Mario Velucchi) Selection of Prof. David SINGMASTER's papers Prof. Knuth's page Aviezri Fraenkel Clifford A. Pickover ... Mario Velucchi's Web Links (Mathematics, Chess, Mathematical Recreations, Computer Science ... any more ...) Top Math Index Mathematics Information Servers#Societies International Mathematical Union (IMU) American Mathematical Society (AMS) The Mathematical Association of America (MAA) National Council of Teachers of Mathematics The EMS Home Page Unione Matematica Italiana Home Page Canadian Mathematical Society ... Interuniversity Centre for Game Theory and Applications (CITG) SIAM's Undergraduate Web page Undergraduate Math Digest The Mensa Home Page Mensa Italia ... News: rec.org.mensa

38. Recreational Math recreational math. by Bernie Freidin © 19992000. These Another recreationalmath interest of mine has been square-packing. Here http://bork.hampshire.edu/~bernie/math/

Recreational Math by Bernie Freidin A B C D A D B C =1652625. I used to be very interested in finding large grids with this property - to this end I wrote some very complex programs to search for smaller grids and then "stitch them together" into larger grids. In the examples below, I have one 8 by 8 grid with 42 points on it (out of a total of 64), and one complete 6 by 4 grid with all 24 points - these were my master creations. I also found a complete grid which was 3 by 81, and I could have extended it even further, but the values were numbers hundreds of digits long. Another recreational math interest of mine has been square-packing. Here are a few examples I did: Last updated April 4th, 2000.

39. Recreational Math DMP Syllabus Homework Practice Tests (Under Construction) Projects/Data.Math Club. recreational math. recreational mathematics CLICK THE PICTURES. http://facultyweb.bullis.org/dickija/Recreational_Math.htm

Home AP Statistics Syllabus Homework ... Homework Practice Tests (Under Construction) Projects/Data Math Club Recreational Math Recreational Mathematics CLICK THE PICTURES

40. MathWorld News: The Mathematical Explorer Software Released MathWorld headline news recreational math Package Released by theMakers of Mathematica. August 20, 2001While many interesting http://mathworld.wolfram.com/news/2001-08-20_explorer/

Recreational Math Package Released by the Makers of Mathematica August 20, 2001While many interesting books devoted to the subject of recreational mathematics have been authored over the years, relatively few pieces of computer software on the topic have been released. This gaping void has now been filled by Wolfram Research's package The Mathematical Explorer The Mathematical Explorer is a stand-alone custom Mathematica product designed for anyone who has ever delighted in exploring the unexpected pleasures of mathematics. As readers of Martin Gardner's "Mathematical Games" columns are aware, one of the joys of recreational math is that no degree in higher math is necessary; a deep appreciation for the subject can be obtained with just a little basic algebra and a sense of fun. The Mathematical Explorer represents a compilation of topics from the books and articles of Stan Wagon, noted mathematician, author, and proponent of the Mathematica technical computing system. More than just an electronic textbook, The Mathematical Explorer is part guide, part calculator, part museum, and part textbook. It combines text, graphics, and formulas in an easy-to-use

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